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  1. #1
    Nighttime Rider
    Join Date
    Dec 2004
    Location
    Portland, Oregon
    My Bikes
    Surly Pugsley, Schwinn Mesa LTD
    Posts
    508
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    Tell me about cranksets.

    Most of my exposure has been with standard 44-32-22 MTB cranksets
    that are throwaway.

    I am interested in finding shorter crank arms (around 160mm) and I have a few questions.

    I see the crank arms for sale and I see BMX Road and MTB. Is there a major difference
    between the three?

    Bolt holes: is there a standard bolt pattern or size or several standards?

    Anything else I should know?

    CE

    P.S.

    Is there a leg inseam to crank set length cart or guideline?

  2. #2
    Senior Member
    Join Date
    May 2007
    Posts
    705
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    Yeah, there's generally quite a difference among the three types...including the bolt circle diameter, as well as chainline specs, single/double/triple, etc... It would be best to use the matching crank for the type of bike... (there's exceptions, of course...)

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